textproduct: Quad Cities

KEY MESSAGES

- Drier and more seasonable conditions expected to start the work week.

- Rain chances (40-70%) return Wednesday night through Thursday evening along with increasing humidity levels.

- Building heat this weekend and into early next week.

SHORT TERM /THROUGH TUESDAY NIGHT/

Issued at 155 PM CDT Mon Jul 6 2026

Typical summer warm weather is in place with humidity levels high enough to add to the heat, but generally far short of anything much above 90F heat index. With high pressure over the western Great Lakes, winds remain light from the northeast. This is drawing in slightly less humid air, with dew points falling to the mid 60s in some locations this afternoon, especially northeast. Tonight, this high pressure will drift southward eventually reaching over top our local area Tuesday morning. This will result in a pleasant, quiet and mainly clear night tonight, with some river valley fog once again, similar to what was seen this morning.

High pressure overhead will bring warm sunny weather to the region tomorrow, with light winds. Humidity will not be too high once again, as dew points hold in the lower to mid 60s most of the day.

LONG TERM /WEDNESDAY THROUGH SUNDAY/

Issued at 155 PM CDT Mon Jul 6 2026

Increasing humidity and southwest winds will be seen Wednesday, as high pressure moves southeast, and an approaching front approaches northern Iowa by late afternoon. Highs in the upper 80s to near 90 will be seen, with dew points rising to the upper 60s to near 70s. Though warmer, the heat index forecast remains in the lower to mid 90s, so well under what was seen a few days ago.

Wednesday night through Friday, this front is expected to slowly move through the CWA. During this process, much like a few days ago, several convective episodes are possible, and locally heavy rainfall could occur. Severe weather is possible, but signals this far out do not show much in the way of high end, nor widespread impact. Still, a boundary in place with July warmth/humidity will offer at least an isolated severe weather threat in diurnal storms given the slightly north of westerly flow aloft, where capping/EML is not as significant as southwest flow aloft.

Beyond Friday, all deterministic and ensemble guidance show a large anomalous 598 dam 500mb ridge building into the central CONUS. Above normal temperatures are likely and with the maturing crops adding additional moisture into the atmosphere, we could see more heat headlines by early next week. The latest CPC Day 6-10 day temperature outlook has 85% combined probabilities of near-above normal temperatures.

AVIATION /18Z TAFS THROUGH 18Z TUESDAY/

Issued at 1218 PM CDT Mon Jul 6 2026

Very quiet, mainly VFR weather will continue through Tuesday afternoon, as high pressure remains over the western Great Lakes. Some valley/river fog is possible again Tuesday morning, similar to what was seen this past morning in the hours just after sunrise. While this will be certainly isolated, it has the best potential to affect DBQ as winds will be light northeast, allowing some of the river fog there to ride up and over the hill the airport it on. For now, I've MVFR visibility around 4SM for this fog threat, but should it occur, it could be 1-3 miles at times in fog. After 14Z, all fog in all areas will burn off, with another great VFR day to follow.

DVN WATCHES/WARNINGS/ADVISORIES

IA...None. IL...None. MO...None.